Ornithology

BERG, BENGT.

Stockholm, 1925.

BENT, ARTHUR CLEVELAND.

Washington, 1923-25.

SCHAUENSEE, RUDOLPHE MEYER de

Edinburgh, (1971).

KELSALL, J.E. a. PHILIP W. MUNN.

London, Witherby & Co., 1905.

PALMER, RALPH S. (Edt.).

New Haven, London, 1962.

FORSHAW, JOSEPH M.

(New Jersey, 1978).

BENT, ARTHUR CLEVELAND.

N.Y., 1946.

BEETHAM, BENTLEY.

London, 1910.

COHEN, EDWIN.

Edinburgh, London, (1963).

ORNITHOLOGISCHE BERICHTE.

Heidelberg, 1947-50.

BENT, ARTHUR CLEVELAND.

Washington, 1939.

BENT, ARTHUR CLEVELAND.

Washington, 1921.

HANDBUCH DER VÖGEL MITTELEUROPAS.

Frankfurt a. Main, 1966-77.

WILDASH, PHILIP.

Vermont, Tokyo, (1968).

BROWN, LESLIE.

London, (1959).

SCHAUENSEE, RUDOLPHE MEYER de

Norberth, (1966).

CHECK-LIST OF NORTH AMERICAN BIRDS.

Baltimore, 1957.

YEATES, G.K.

N.Y., (1950).